23772135898 has 32 divisors (see below), whose sum is σ = 43326441216. Its totient is φ = 9561222528.

The previous prime is 23772135857. The next prime is 23772135943. The reversal of 23772135898 is 89853127732.

It is a super-2 number, since 2×23772135898² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679411 + ... + 713542.

It is an arithmetic number, because the mean of its divisors is an integer number (1353951288).

Almost surely, 2^23772135898 is an apocalyptic number.

23772135898 is a deficient number, since it is larger than the sum of its proper divisors (19554305318).

23772135898 is a wasteful number, since it uses less digits than its factorization.

23772135898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393038.

The product of its digits is 5080320, while the sum is 55.

The spelling of 23772135898 in words is "twenty-three billion, seven hundred seventy-two million, one hundred thirty-five thousand, eight hundred ninety-eight".